build-sys: meson: when libc iconv is used, tell libiconv header to pretend to be...

The libiconv header on FreeBSD would be preferred by include path, but
we don't want to link to libiconv, so tell its header to act like
the system header.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/277>

diff --git a/meson.build b/meson.build
index 38d56ba..51ef844 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -439,6 +439,8 @@ have_iconv = false
 if cc.has_function('iconv_open')
   iconv_dep = dependency('', required : false)
   have_iconv = true
+  # tell the libiconv header to pretend to be libc iconv
+  cdata.set('LIBICONV_PLUG', 1)
 else
   iconv_dep = cc.find_library('iconv', required : false)
   have_iconv = iconv_dep.found()